흰쥐의 편도체와 중뇌 변연체계가 강화자의 처리에 미치는 영향

권혁철 한국심리학회 한국심리학회지 생물 및 생리 Vol.4 No.1

본 연구에서는 편도체 손상과 아포모르핀 또는 할로페리들의 측핵내 주입이 수동회피과제의 습득에 어떤 효과가 있는 가를 알아보았다. 또한 편도체 손상에 의한 효과가 손상 후에 이들 약물의 측핵내 주입에 의해 변화되는 가를 알아 보았다. 72마리의 흰쥐를 편도체손상유무 (2) X 투여약물(3)에 따라 6집단에 각각 12마리씩을 할당하였다. 왕복상자를 이용한 단일시행 수동회피과제의 수행은 C언어로 작성한 프로그램에 의해 기록되었다. 편도체 손상은 수동회피과제의 수행에 결함을 초래했다. 할로페리들의 측핵내 주입은 수행을 저조하게 하였으나 편도체 손상의 효과를 변경시키지는 않았다. 아포모르핀의 주입은 수행에 아무 영향을 주지 않았다. 그러나 통계적으로 유의하지는 않았지만 편도체 손상의 효과를 어느 정도 경감시켰다. 이러한 결과는 편도체가 부적강화의 처리에 관여하고 있음을 보여주는 것이다. 또한 편도체로부터의 입력이 측핵 도파민에 의해 조절되고 있음을 부분적으로 지지해준다. This study examined the effects of (1)amygdaloid lesion, (2)dopamine agonist injections and antagonist injections into the nucleus accumbens, and (3)these injection treatments after amygdaloid lesion on acquisition of passive avoidance task. Seventy two rats were assigned to six groups: (1)apomorphin injected, (2)haloperidol injected, (3)saline injected, (4)amygdala lesioned and apomorphin injected, (5)amygdala lesioned and haloperidol injected, (6)amygdala lesioned and saline injected. Performances of one-trial passive avoidance task using shuttle box were recorded by program made of C language. It was found that amygdaloid lesion impaired passive avoidance learning. Haloperidol injections into the nucleus accumbens impaired the performance but did not alter the effect of amygdaloid lesion. Apomorphin injections into the nucleus accumbens had no effect on the performance but it altered the effect of amygdaloid lesion. These results showed that amygdala is involved in the processing of negative reinforcer which is withdrawl of aversive stimulus. And it was partly supported that the input from amygdala was modulated by dopamin in nucleus accumbens.

짝이 되는 두 부품의 경제적 선택조립 절차

권혁무,김광재 한국경영과학회 1999 한국경영과학회지 Vol.24 No.1

An economic procedure of selective assembly is proposed when a product is composed of two mating components The major quality characteristic of the clearance between the two components The components are divided into several classes prior to assembly The component characteristics are assumed to be independently and normally distributed with equal variance The procedure is designed so that the proportions of both components in their corresponding classes are the sane A cost model is developed based on a quadratic loss function and methods of obtaining the optimal class limits as well as the optimal number of classes are provided Formulas for obtaining the proportion of rejection and unavailability of mating components are also provided The proposed model is compared with the equal width and equal area partitioning methods using a numerical example

인종주의에 관한 토니 모리슨의 사유 : 비창작작품을 중심으로

권혁미 남서울대학교 2010 남서울대학교 논문집 Vol.16 No.1-2

This paper traces Toni Morrison's thought about racism in her non-fiction stories, interviews and biographies. Morrison, the first Afro-American Nobel Prize winner, has written a lot of manuscripts. Therefore there have been a great number of criticisms about the themes of her works from various perspectives. But I believe one common theme of her works is racism. Afro-Americans in the past had experienced oppression which impacted their lives negatively and had remained traumatized. Even after their emancipation from slavery by law, they were not liberated in real life. Through her characters during the slavery period, or descendants of slaves in her works, Morrison reveals that slaves were taken advantage of as the Other to prove white people's superior identities and that the media have manipulated the public opinions against the Afro-Americans. Morrison also attempts to convey through her writings how ex-slaves have overcome their traumas and have rebuilt their forgotten history. Examining her non-fiction stories provides a good basis for analyzing Morrison's fictions. This ensures that her creative writings have been accomplished for the benefit of the whole mankind as well as the Afro-Americans. Key Words : Toni Morrison, racism, Afro-American, non-fiction

중대산업사고 예방을 위한 종합위험관리체제(IRMS) 구축에 관한 연구

권혁면,성대현,김재현,임대식,김기영,편무욱,문일,고재욱,이영순,윤인섭 한국안전학회 2003 한국안전학회지 Vol.18 No.3

The Process Safety Management (PSM) by the Law of Industry, Safety and Health has been performed for preventing major accidents of chemical plants since 1996. In terms of preventing chemical accidents more precisely, it is essential to develop a tool for quantitative risk assessment. For this, KOSHA (Korea Occupational Safety and Health Agency) developed an Integrated Risk Management System (IRMS) . The system is designed to assimilate data on chemical plant hazards from external database, to integrate these data with location information (topographic and demographic), and to make them user-friendly accessible. The system consists of several main functions: display of five major Korean petrochemical complex layout, display of equipment layout with its information utilizing the external database, zonation of the hazard effected area with consequence analyses, the most probable accident scenario generation, accident/incident database and calculation of frequency of accident using equipment reliability database, etc. The highlight of IRMS is to provide the risk contours using GIS(Geographical Information System) technology. IRMS is intended to manage hazardous installation more systematically and effectively, to reduce the number of accident remarkably, further minimizing production loss in the plant. The system is now under application to about 500 PSM sites as well as and emergency authorities in Korea by KOSHA (Korea Occupational Safety and Health Agency)

공작기계산업에서의 품질관리 사례 연구

권혁무 釜山工業大學校 1995 論文集 Vol.37 No.-

In cases where most produced units are different from each other, the existing statistical techniques are difficult to be used for quality control. In this article, the practices of quality control of a company in the machine tools industry are reviewed and some recommendations for improvements are suggested.

『빌러비드』에서의 진정한 정체성의 추구

권혁미 남서울대학교 2004 남서울대학교 논문집 Vol.10 No.3

This dissertation examines Toni Morrison's Beloved from the perspective of postcolonialism. In America, slavery was prevalent, albeit the country was presenting itself as a democratic nation. A critic has evaluated America as an 'Internal Colonial' country. Afro-Americans experienced oppression which influenced their lives negatively and remained traumatically in their minds. Even after the liberation, they were freed not in real life but just by law. Through Beloved, Toni Morrison reveals a history of slavery. She understands slavery as being a crisis of subjectivity and community. She attempts to disrupt what is called 'the national amnesia', which prevented the ex-slaves from generating positive identity. This role of Morrison's through her novel is the same as postcolonial theorists'. Post-colonial theory, which has challenged the discourse of the white dominant colonizer, provides a good basis for the analysis of Beloved in which ex-slaves overcome trauma and rebuild their forgotten history. In Beloved, although the setting and scope of the novel is primarily slavery in the American South, Morrison wants to recover all facets of the slaves' story from Africa to America. Slave women were never able to be wives or mothers. Escape from the teacher and the killing of her daughter, is Sethe's means of emphatic rejection of slavery's power to circumscribe her motherhood. 18 years later, by Morrison's incarnating the past in the form of Beloved, the characters are enable to confront and remember their past in a manner in which it can be digested. Sethe is on the verge of new understanding that she, as well as her daughters, is a valuable human being. Sethe's process to find her real identity shows the way in which all blacks can escape their own trauma.

주택건설현장 폐 콘크리트 발생 저감 식스시그마 프로젝트 추진 사례 : a Six Sigma Project for Decreasing Waste Concrete in a Housing Construction Site

권혁무,김정택,최준호 한국품질경영학회 2000 품질혁신 Vol.1 No.1

본 사례는 국내 APT 건설 현장에서 수행된 식스시그마 프로젝트에 대한 것으로 페콘크리트 발생 저감 및 잔량발생에 영향을 미치는 주요 인자들을 파악하고 개선안을 도출하는 과정을 보였다. 프로젝트는 식스시그마의 방법론을 따라 정의, 측정, 분석, 개선, 관리의 절차에 따라 주요 변수를 규명하고 개선안을 찾아내는 식으로 진행되었다. 분석결과 페콘크리트 발생을 줄이기 위해서는 첫째, 거푸집 시공 및 타설 프로세스를 개선하고 둘째, 압송관 및 펌프카 내 잔여 레미콘을 최소한으로 감소시키며 셋째, 최종적으로 남은 레미콘을 재활용할 수 있도록 하는 세가지로 요약되었다.

측핵과 편도체 중심핵이 조건공포의 습득과 파지에 미치는 영향

권혁철 한국심리학회 한국심리학회지 생물 및 생리 Vol.6 No.1

편도체 중심핵의 손상과 측핵의 손상이 조건공포의 습득과 파지에 주는 효과를 알아보았다. 편도체 중심핵 손상 집단의 지렛대 누르기에 있어서의 억압률을 모의시술-조건형성 집단과 모의시술-통제 집단의 억압률과 비교하였다. 측핵 손상 집단에 대해서도 각기 동일한 비교를 하였다. 편도체 중심핵 손상 집단의 조건공포 습득에 있어서의 결함이 나타났고, 측핵 손상 집단에서도 동일한 결함이 있었다. 이러한 결과는 편도체 중심핵이 동기적으로 중요한 자극들 사이의 연합의 형성과 유지에 있어 매우 중요하며, 중뇌변연 도파민계가 동기적으로 중요한 자극에 의한 행동의 활성화에 관여하고 있음을 지지해 준다. This study examined effects on acquisition and retention of conditioned fear of nucleus accumbens(n.Acc) lesion and central amygdaloid nucleus(ACe) lesion. The suppression ratio in bar-pressing of ACe-lesioned group was compared with that of Sham-Conditioning group and Sham-Control group. In n.Acc groups same comparisions were made respectively. If was found that ACe-lesioned animals and n.Acc-lesioned animals showed the deficit in acquisition of conditioned fear. It was suggested that ACe seemed to be essential in the formation of associations between motivationally significant stimuli and that mesolimbic dopamine system was involved in the activation of behavior by motivationally significant stimuli.

시클로펜틸아렌술포네이트 및 시클로헥실아렌술포네이트와 아닐린과의 친핵성치환반응

吳爀根,趙仁鎬,申哲昊,權永峰 全北大學校 1993 論文集 Vol.35 No.-

The nucleophilic substitution reactions of cyclopentylarenesulfonates and cyclohexylarenesulfonates with anilines in acetonitrile at 65.0℃ are investigated. The cross-interaction constants ρxz(and βxz) between substitue-nts in the nucleophile(X) and leaving group(Z) are positive and have relatively small mmagnitude. The transition state(TS) variation is consistent with that predicted by the More O'Ferrall-Jencks diagram as expected from the positive ρxz. The small magnitude of ρxz correctly refrects a relatively loose TS structure in contrast to the tight TS for primary alkyl derivatives under similar reaction conditions.

운동이 비만 여성의 심근산소소비량과 심전도 QTc 간격에 미치는 영향

이혁종,박윤정,김용권,한구석,진영수 대한스포츠의학회 1999 대한스포츠의학회지 Vol.17 No.1

The purpose of this study was to investigate the effects of exercise staining on MVO_2 and electrocardiogram QTc interval in obese woman and to propose the desirable method for weight loss. Subjects were fifteen obese women for this study. 8 subjects were prolonged QTc interval group and 7 subjects were normal QTc interval. They participated in exercise program consisted of aerobic exercise and weight training exercise at A Medical Center. The body composition including Boyd Weight, BMI, WHR and % Body Fat was measured. The resting and exercise(Bruce protocol 7th min) rate-pressure product(RPP) could be measured with HR and systolic BP for MVO_2 measurement. The electrocardiogram QTc interval was calculated with Bazzett's formula using automated software program. The measured data of this study were as follows: 1) After participating the exercise program consisted of aerobic exercise and weight training exercise, Body Weight, BMI, WHR and % Body Fat were significantly changed in two groups. (p<.05). 2. After participating in the exercise program consisted of aerobic exercise and weight training exercise, the resting and exercise MVO_2 using RPP were significantly changed in two groups(p<.05). 3) After participating in the exercise program consisted of aerobic exercise and weight training exercise, the electrocardiogram QTc interval were decreased but were not significantly changed in prolonged QTc interval group. (p<.29). However, it was significantly decreased in prolonged QTc interval(p<.00).